EFFECT OF FLY ASH AND MICROBES ON THE GROWTH, NODULATION AND MYCORRHIZATION IN PEA (PISUM SATIVUM (L.) VAR. AP3)

In India electricity generation mainly depend on the coal based thermal power plant. Huge amount of fly ash generation causes serious environmental problem so it necessary to proper utilization of fly ash. Fly ash contain huge amount of toxic element like Cd, Pb etc. but it contains almost all the essential plant nutrients i.e., macronutrients including K, Ca, Mg and Micronutrients like Fe, Mn, Zn, Cu, Co, B etc. So, because of it physical and chemical properties fly ash is beneficial for soil and crop health. The present study has been undertaken to see the effect of fly ash alone and with microbes like AM fungi native to fly ash dumped site, Rhizobium sp. and P solubilizer (Aspergillusniger) on the growth and yield of Pea (Pisumsativum(L.)var. AP3). An experiment was set up in pots in green house condition to assess the performance of the crop raised in Agriculture soil of Allahabad, amended with organic matter (Cynodon2% w/w) and different concentrations of fly ash (10%, 20%, 30%) and inoculated with all the three bioinoculants. Data show that the high concentrations of fly ash (20% & 30%) without organic matter and microbial inoculants caused a heavy rate of mortality, reduced the root and shoot biomass, nodulation and yield. However, the soil amendment with organic matter and microbial inoculants caused a tremendous improvement in root/shoot biomass, nodulation and yield of the plants. Out of three concentrations of fly ash, 10% fly ash gave the best results with organic amendment and microbial inoculation